How would both the North and the South have expected to benefit from the passage of the Kansas-Nebraska Act?

In order to maintain their advantage over one another, the North and the South lobbied for new states to be admitted as either slave states or free states; if there were more slave states, a civil war might result in a Confederate victory and vice versa; consequently, when the Missouri Comprise was signed and Missouri became a slave state, Maine was promptly admitted as a free state to balance them out. Therefore, when Kansas and Nebraska were put up for statehood, it was decided to let the people of the state vote to determine whether each state would become a slave state or remain free. Since Nebraska was seen as automatically voting for a free state, all the attention was on Kansas,

Both the North and the South expected to benefit from the passage of the Kansas-Nebraska Act because it allowed for popular sovereignty in deciding the issue of slavery in those territories. The North saw it as an opportunity to potentially expand free states, while the South saw it as a chance to expand slave territories. Additionally, the Act was seen as a means to promote westward expansion and economic development for both regions.